Med Biol Eng Comput - A unified procedure for detecting, quantifying, and validating electrocardiogram T-wave alternans.

Tópicos

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Resumo

The precision of T-wave alternans (TWA) quantification depends certainly upon the way we choose to align T-waves and to get feedbacks from the electrocardiogram (ECG) quality. Quantifying the ECG TWA based on assigning automatically the required number of T-waves along with applying a proper T-wave alignment approach is the purpose of this paper. The structure of the proposed method mainly consists of seven sections: preprocessing, ECG events detection-delineation, alignment of cycles, T-wave template extraction, T-wave delineation, T-wave left- and right-lobes synchronization, and T-wave alternans quantification-detection by getting feedback from ECG quality value. The proposed method is examined in two ways. First, some artificially generated ECGs with predefined TWA patterns and qualities are analyzed in order to regulate the parameters of the method to achieve the maximum performance. Finally, the method is applied to PhysioNet/Computing in Cardiology Challenge 2008 database. In this stage, the achieved accuracy is about 91.0 %, which shows marginal improvement in the area of TWA quantification.

Resumo Limpo

precis twave alternan twa quantif depend certain upon way choos align twave get feedback electrocardiogram ecg qualiti quantifi ecg twa base assign automat requir number twave along appli proper twave align approach purpos paper structur propos method main consist seven section preprocess ecg event detectiondelin align cycl twave templat extract twave delin twave left rightlob synchron twave alternan quantificationdetect get feedback ecg qualiti valu propos method examin two way first artifici generat ecg predefin twa pattern qualiti analyz order regul paramet method achiev maximum perform final method appli physionetcomput cardiolog challeng databas stage achiev accuraci show margin improv area twa quantif

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